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gnu-social/lib/util.php

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<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* XXX: break up into separate modules (HTTP, HTML, user, files) */
# Show a server error
function common_server_error($msg, $code=500) {
static $status = array(500 => 'Internal Server Error',
501 => 'Not Implemented',
502 => 'Bad Gateway',
503 => 'Service Unavailable',
504 => 'Gateway Timeout',
505 => 'HTTP Version Not Supported');
if (!array_key_exists($code, $status)) {
$code = 500;
}
$status_string = $status[$code];
header('HTTP/1.1 '.$code.' '.$status_string);
header('Content-type: text/plain');
print $msg;
print "\n";
exit();
}
# Show a user error
function common_user_error($msg, $code=400) {
static $status = array(400 => 'Bad Request',
401 => 'Unauthorized',
402 => 'Payment Required',
403 => 'Forbidden',
404 => 'Not Found',
405 => 'Method Not Allowed',
406 => 'Not Acceptable',
407 => 'Proxy Authentication Required',
408 => 'Request Timeout',
409 => 'Conflict',
410 => 'Gone',
411 => 'Length Required',
412 => 'Precondition Failed',
413 => 'Request Entity Too Large',
414 => 'Request-URI Too Long',
415 => 'Unsupported Media Type',
416 => 'Requested Range Not Satisfiable',
417 => 'Expectation Failed');
if (!array_key_exists($code, $status)) {
$code = 400;
}
$status_string = $status[$code];
header('HTTP/1.1 '.$code.' '.$status_string);
common_show_header('Error');
common_element('div', array('class' => 'error'), $msg);
common_show_footer();
}
$xw = null;
# Start an HTML element
function common_element_start($tag, $attrs=NULL) {
global $xw;
$xw->startElement($tag);
if (is_array($attrs)) {
foreach ($attrs as $name => $value) {
$xw->writeAttribute($name, $value);
}
} else if (is_string($attrs)) {
$xw->writeAttribute('class', $attrs);
}
}
function common_element_end($tag) {
static $empty_tag = array('base', 'meta', 'link', 'hr',
'br', 'param', 'img', 'area',
'input', 'col');
global $xw;
# XXX: check namespace
if (in_array($tag, $empty_tag)) {
$xw->endElement();
} else {
$xw->fullEndElement();
}
}
function common_element($tag, $attrs=NULL, $content=NULL) {
common_element_start($tag, $attrs);
global $xw;
if (!is_null($content)) {
$xw->text($content);
}
common_element_end($tag);
}
function common_start_xml($doc=NULL, $public=NULL, $system=NULL, $indent=true) {
global $xw;
$xw = new XMLWriter();
$xw->openURI('php://output');
$xw->setIndent($indent);
$xw->startDocument('1.0', 'UTF-8');
if ($doc) {
$xw->writeDTD($doc, $public, $system);
}
}
function common_end_xml() {
global $xw;
$xw->endDocument();
$xw->flush();
}
function common_init_locale($language=null) {
if(!$language) {
$language = common_language();
}
putenv('LANGUAGE='.$language);
putenv('LANG='.$language);
return setlocale(LC_ALL, $language . ".utf8",
$language . ".UTF8",
$language . ".utf-8",
$language . ".UTF-8",
$language);
}
function common_init_language() {
mb_internal_encoding('UTF-8');
$language = common_language();
# So we don't have to make people install the gettext locales
$locale_set = common_init_locale($language);
bindtextdomain("laconica", common_config('site','locale_path'));
bind_textdomain_codeset("laconica", "UTF-8");
textdomain("laconica");
setlocale(LC_CTYPE, 'C');
if(!$locale_set) {
common_log(LOG_INFO,'Language requested:'.$language.' - locale could not be set:',__FILE__);
}
}
define('PAGE_TYPE_PREFS', 'text/html,application/xhtml+xml,application/xml;q=0.3,text/xml;q=0.2');
function common_show_header($pagetitle, $callable=NULL, $data=NULL, $headercall=NULL) {
global $config, $xw;
global $action; /* XXX: kind of cheating here. */
common_start_html();
common_element_start('head');
common_element('title', NULL,
$pagetitle . " - " . $config['site']['name']);
common_element('link', array('rel' => 'stylesheet',
'type' => 'text/css',
'href' => theme_path('display.css') . '?version=' . LACONICA_VERSION,
'media' => 'screen, projection, tv'));
foreach (array(6,7) as $ver) {
if (file_exists(theme_file('ie'.$ver.'.css'))) {
# Yes, IE people should be put in jail.
$xw->writeComment('[if lte IE '.$ver.']><link rel="stylesheet" type="text/css" '.
'href="'.theme_path('ie'.$ver.'.css').'?version='.LACONICA_VERSION.'" /><![endif]');
}
}
common_element('script', array('type' => 'text/javascript',
'src' => common_path('js/jquery.min.js')),
' ');
common_element('script', array('type' => 'text/javascript',
'src' => common_path('js/jquery.form.js')),
' ');
common_element('script', array('type' => 'text/javascript',
'src' => common_path('js/xbImportNode.js')),
' ');
common_element('script', array('type' => 'text/javascript',
'src' => common_path('js/util.js?version='.LACONICA_VERSION)),
' ');
common_element('link', array('rel' => 'search', 'type' => 'application/opensearchdescription+xml',
'href' => common_local_url('opensearch', array('type' => 'people')),
'title' => common_config('site', 'name').' People Search'));
common_element('link', array('rel' => 'search', 'type' => 'application/opensearchdescription+xml',
'href' => common_local_url('opensearch', array('type' => 'notice')),
'title' => common_config('site', 'name').' Notice Search'));
if ($callable) {
if ($data) {
call_user_func($callable, $data);
} else {
call_user_func($callable);
}
}
common_element_end('head');
common_element_start('body', $action);
common_element_start('div', array('id' => 'wrap'));
common_element_start('div', array('id' => 'header'));
common_nav_menu();
if ((isset($config['site']['logo']) && is_string($config['site']['logo']) && (strlen($config['site']['logo']) > 0))
|| file_exists(theme_file('logo.png')))
{
common_element_start('a', array('href' => common_local_url('public')));
common_element('img', array('src' => isset($config['site']['logo']) ?
($config['site']['logo']) : theme_path('logo.png'),
'alt' => $config['site']['name'],
'id' => 'logo'));
common_element_end('a');
} else {
common_element_start('p', array('id' => 'branding'));
common_element('a', array('href' => common_local_url('public')),
$config['site']['name']);
common_element_end('p');
}
common_element('h1', 'pagetitle', $pagetitle);
if ($headercall) {
if ($data) {
call_user_func($headercall, $data);
} else {
call_user_func($headercall);
}
}
common_element_end('div');
common_element_start('div', array('id' => 'content'));
}
function common_start_html($type=NULL, $indent=true) {
if (!$type) {
$httpaccept = isset($_SERVER['HTTP_ACCEPT']) ? $_SERVER['HTTP_ACCEPT'] : NULL;
# XXX: allow content negotiation for RDF, RSS, or XRDS
$type = common_negotiate_type(common_accept_to_prefs($httpaccept),
common_accept_to_prefs(PAGE_TYPE_PREFS));
if (!$type) {
common_user_error(_('This page is not available in a media type you accept'), 406);
exit(0);
}
}
header('Content-Type: '.$type);
common_start_xml('html',
'-//W3C//DTD XHTML 1.0 Strict//EN',
'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd', $indent);
# FIXME: correct language for interface
$language = common_language();
common_element_start('html', array('xmlns' => 'http://www.w3.org/1999/xhtml',
'xml:lang' => $language,
'lang' => $language));
}
function common_show_footer() {
global $xw, $config;
common_element_end('div'); # content div
common_foot_menu();
common_element_start('div', array('id' => 'footer'));
common_element_start('div', 'laconica');
if (common_config('site', 'broughtby')) {
$instr = _('**%%site.name%%** is a microblogging service brought to you by [%%site.broughtby%%](%%site.broughtbyurl%%). ');
} else {
$instr = _('**%%site.name%%** is a microblogging service. ');
}
$instr .= sprintf(_('It runs the [Laconica](http://laconi.ca/) microblogging software, version %s, available under the [GNU Affero General Public License](http://www.fsf.org/licensing/licenses/agpl-3.0.html).'), LACONICA_VERSION);
$output = common_markup_to_html($instr);
common_raw($output);
common_element_end('div');
common_element('img', array('id' => 'cc',
'src' => $config['license']['image'],
'alt' => $config['license']['title']));
common_element_start('p');
common_text(_('Unless otherwise specified, contents of this site are copyright by the contributors and available under the '));
common_element('a', array('class' => 'license',
'rel' => 'license',
'href' => $config['license']['url']),
$config['license']['title']);
common_text(_('. Contributors should be attributed by full name or nickname.'));
common_element_end('p');
common_element_end('div');
common_element_end('div');
common_element_end('body');
common_element_end('html');
common_end_xml();
}
function common_text($txt) {
global $xw;
$xw->text($txt);
}
function common_raw($xml) {
global $xw;
$xw->writeRaw($xml);
}
function common_nav_menu() {
$user = common_current_user();
common_element_start('ul', array('id' => 'nav'));
if ($user) {
common_menu_item(common_local_url('all', array('nickname' => $user->nickname)),
_('Home'));
}
common_menu_item(common_local_url('peoplesearch'), _('Search'));
if ($user) {
common_menu_item(common_local_url('profilesettings'),
_('Settings'));
common_menu_item(common_local_url('invite'),
_('Invite'));
common_menu_item(common_local_url('logout'),
_('Logout'));
} else {
common_menu_item(common_local_url('login'), _('Login'));
if (!common_config('site', 'closed')) {
common_menu_item(common_local_url('register'), _('Register'));
}
common_menu_item(common_local_url('openidlogin'), _('OpenID'));
}
common_menu_item(common_local_url('doc', array('title' => 'help')),
_('Help'));
common_element_end('ul');
}
function common_foot_menu() {
common_element_start('ul', array('id' => 'nav_sub'));
common_menu_item(common_local_url('doc', array('title' => 'help')),
_('Help'));
common_menu_item(common_local_url('doc', array('title' => 'about')),
_('About'));
common_menu_item(common_local_url('doc', array('title' => 'faq')),
_('FAQ'));
common_menu_item(common_local_url('doc', array('title' => 'privacy')),
_('Privacy'));
common_menu_item(common_local_url('doc', array('title' => 'source')),
_('Source'));
common_menu_item(common_local_url('doc', array('title' => 'contact')),
_('Contact'));
common_element_end('ul');
}
function common_menu_item($url, $text, $title=NULL, $is_selected=false) {
$lattrs = array();
if ($is_selected) {
$lattrs['class'] = 'current';
}
common_element_start('li', $lattrs);
$attrs['href'] = $url;
if ($title) {
$attrs['title'] = $title;
}
common_element('a', $attrs, $text);
common_element_end('li');
}
function common_input($id, $label, $value=NULL,$instructions=NULL) {
common_element_start('p');
common_element('label', array('for' => $id), $label);
$attrs = array('name' => $id,
'type' => 'text',
'class' => 'input_text',
'id' => $id);
if ($value) {
$attrs['value'] = htmlspecialchars($value);
}
common_element('input', $attrs);
if ($instructions) {
common_element('span', 'input_instructions', $instructions);
}
common_element_end('p');
}
function common_checkbox($id, $label, $checked=false, $instructions=NULL, $value='true', $disabled=false)
{
common_element_start('p');
$attrs = array('name' => $id,
'type' => 'checkbox',
'class' => 'checkbox',
'id' => $id);
if ($value) {
$attrs['value'] = htmlspecialchars($value);
}
if ($checked) {
$attrs['checked'] = 'checked';
}
if ($disabled) {
$attrs['disabled'] = 'true';
}
common_element('input', $attrs);
common_text(' ');
common_element('label', array('class' => 'checkbox_label', 'for' => $id), $label);
common_text(' ');
if ($instructions) {
common_element('span', 'input_instructions', $instructions);
}
common_element_end('p');
}
function common_dropdown($id, $label, $content, $instructions=NULL, $blank_select=FALSE, $selected=NULL) {
common_element_start('p');
common_element('label', array('for' => $id), $label);
common_element_start('select', array('id' => $id, 'name' => $id));
if ($blank_select) {
common_element('option', array('value' => ''));
}
foreach ($content as $value => $option) {
if ($value == $selected) {
common_element('option', array('value' => $value, 'selected' => $value), $option);
} else {
common_element('option', array('value' => $value), $option);
}
}
common_element_end('select');
if ($instructions) {
common_element('span', 'input_instructions', $instructions);
}
common_element_end('p');
}
function common_hidden($id, $value) {
common_element('input', array('name' => $id,
'type' => 'hidden',
'id' => $id,
'value' => $value));
}
function common_password($id, $label, $instructions=NULL) {
common_element_start('p');
common_element('label', array('for' => $id), $label);
$attrs = array('name' => $id,
'type' => 'password',
'class' => 'password',
'id' => $id);
common_element('input', $attrs);
if ($instructions) {
common_element('span', 'input_instructions', $instructions);
}
common_element_end('p');
}
function common_submit($id, $label, $cls='submit') {
global $xw;
common_element_start('p');
common_element('input', array('type' => 'submit',
'id' => $id,
'name' => $id,
'class' => $cls,
'value' => $label));
common_element_end('p');
}
function common_textarea($id, $label, $content=NULL, $instructions=NULL) {
common_element_start('p');
common_element('label', array('for' => $id), $label);
common_element('textarea', array('rows' => 3,
'cols' => 40,
'name' => $id,
'id' => $id),
($content) ? $content : '');
if ($instructions) {
common_element('span', 'input_instructions', $instructions);
}
common_element_end('p');
}
function common_timezone() {
if (common_logged_in()) {
$user = common_current_user();
if ($user->timezone) {
return $user->timezone;
}
}
global $config;
return $config['site']['timezone'];
}
function common_language() {
// If there is a user logged in and they've set a language preference
// then return that one...
if (common_logged_in()) {
$user = common_current_user();
$user_language = $user->language;
if ($user_language)
return $user_language;
}
// Otherwise, find the best match for the languages requested by the
// user's browser...
$httplang = isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) ? $_SERVER['HTTP_ACCEPT_LANGUAGE'] : NULL;
if (!empty($httplang)) {
$language = client_prefered_language($httplang);
if ($language)
return $language;
}
// Finally, if none of the above worked, use the site's default...
return common_config('site', 'language');
}
# salted, hashed passwords are stored in the DB
function common_munge_password($password, $id) {
return md5($password . $id);
}
# check if a username exists and has matching password
function common_check_user($nickname, $password) {
# NEVER allow blank passwords, even if they match the DB
if (mb_strlen($password) == 0) {
return false;
}
$user = User::staticGet('nickname', $nickname);
if (is_null($user)) {
return false;
} else {
if (0 == strcmp(common_munge_password($password, $user->id),
$user->password)) {
return $user;
} else {
return false;
}
}
}
# is the current user logged in?
function common_logged_in() {
return (!is_null(common_current_user()));
}
function common_have_session() {
return (0 != strcmp(session_id(), ''));
}
function common_ensure_session() {
if (!common_have_session()) {
@session_start();
}
}
# Three kinds of arguments:
# 1) a user object
# 2) a nickname
# 3) NULL to clear
# Initialize to false; set to NULL if none found
$_cur = false;
function common_set_user($user) {
global $_cur;
if (is_null($user) && common_have_session()) {
$_cur = NULL;
unset($_SESSION['userid']);
return true;
} else if (is_string($user)) {
$nickname = $user;
$user = User::staticGet('nickname', $nickname);
} else if (!($user instanceof User)) {
return false;
}
if ($user) {
common_ensure_session();
$_SESSION['userid'] = $user->id;
$_cur = $user;
return $_cur;
}
return false;
}
function common_set_cookie($key, $value, $expiration=0) {
$path = common_config('site', 'path');
$server = common_config('site', 'server');
if ($path && ($path != '/')) {
$cookiepath = '/' . $path . '/';
} else {
$cookiepath = '/';
}
return setcookie($key,
$value,
$expiration,
$cookiepath,
$server);
}
define('REMEMBERME', 'rememberme');
define('REMEMBERME_EXPIRY', 30 * 24 * 60 * 60); # 30 days
function common_rememberme($user=NULL) {
if (!$user) {
$user = common_current_user();
if (!$user) {
common_debug('No current user to remember', __FILE__);
return false;
}
}
$rm = new Remember_me();
$rm->code = common_good_rand(16);
$rm->user_id = $user->id;
# Wrap the insert in some good ol' fashioned transaction code
$rm->query('BEGIN');
$result = $rm->insert();
if (!$result) {
common_log_db_error($rm, 'INSERT', __FILE__);
common_debug('Error adding rememberme record for ' . $user->nickname, __FILE__);
return false;
}
$rm->query('COMMIT');
common_debug('Inserted rememberme record (' . $rm->code . ', ' . $rm->user_id . '); result = ' . $result . '.', __FILE__);
$cookieval = $rm->user_id . ':' . $rm->code;
common_log(LOG_INFO, 'adding rememberme cookie "' . $cookieval . '" for ' . $user->nickname);
common_set_cookie(REMEMBERME, $cookieval, time() + REMEMBERME_EXPIRY);
return true;
}
function common_remembered_user() {
$user = NULL;
$packed = isset($_COOKIE[REMEMBERME]) ? $_COOKIE[REMEMBERME] : NULL;
if (!$packed) {
return NULL;
}
list($id, $code) = explode(':', $packed);
if (!$id || !$code) {
common_log(LOG_WARNING, 'Malformed rememberme cookie: ' . $packed);
common_forgetme();
return NULL;
}
$rm = Remember_me::staticGet($code);
if (!$rm) {
common_log(LOG_WARNING, 'No such remember code: ' . $code);
common_forgetme();
return NULL;
}
if ($rm->user_id != $id) {
common_log(LOG_WARNING, 'Rememberme code for wrong user: ' . $rm->user_id . ' != ' . $id);
common_forgetme();
return NULL;
}
$user = User::staticGet($rm->user_id);
if (!$user) {
common_log(LOG_WARNING, 'No such user for rememberme: ' . $rm->user_id);
common_forgetme();
return NULL;
}
# successful!
$result = $rm->delete();
if (!$result) {
common_log_db_error($rm, 'DELETE', __FILE__);
common_log(LOG_WARNING, 'Could not delete rememberme: ' . $code);
common_forgetme();
return NULL;
}
common_log(LOG_INFO, 'logging in ' . $user->nickname . ' using rememberme code ' . $rm->code);
common_set_user($user);
common_real_login(false);
# We issue a new cookie, so they can log in
# automatically again after this session
common_rememberme($user);
return $user;
}
# must be called with a valid user!
function common_forgetme() {
common_set_cookie(REMEMBERME, '', 0);
}
# who is the current user?
function common_current_user() {
global $_cur;
if ($_cur === false) {
if (isset($_REQUEST[session_name()]) || (isset($_SESSION['userid']) && $_SESSION['userid'])) {
common_ensure_session();
$id = isset($_SESSION['userid']) ? $_SESSION['userid'] : false;
if ($id) {
$_cur = User::staticGet($id);
return $_cur;
}
}
# that didn't work; try to remember; will init $_cur to NULL on failure
$_cur = common_remembered_user();
if ($_cur) {
common_debug("Got User " . $_cur->nickname);
common_debug("Faking session on remembered user");
# XXX: Is this necessary?
$_SESSION['userid'] = $_cur->id;
}
}
return $_cur;
}
# Logins that are 'remembered' aren't 'real' -- they're subject to
# cookie-stealing. So, we don't let them do certain things. New reg,
# OpenID, and password logins _are_ real.
function common_real_login($real=true) {
common_ensure_session();
$_SESSION['real_login'] = $real;
}
function common_is_real_login() {
return common_logged_in() && $_SESSION['real_login'];
}
# get canonical version of nickname for comparison
function common_canonical_nickname($nickname) {
# XXX: UTF-8 canonicalization (like combining chars)
return strtolower($nickname);
}
# get canonical version of email for comparison
function common_canonical_email($email) {
# XXX: canonicalize UTF-8
# XXX: lcase the domain part
return $email;
}
define('URL_REGEX', '^|[ \t\r\n])((ftp|http|https|gopher|mailto|news|nntp|telnet|wais|file|prospero|aim|webcal):(([A-Za-z0-9$_.+!*(),;/?:@&~=-])|%[A-Fa-f0-9]{2}){2,}(#([a-zA-Z0-9][a-zA-Z0-9$_.+!*(),;/?:@&~=%-]*))?([A-Za-z0-9$_+!*();/?:~-]))');
function common_render_content($text, $notice) {
$r = common_render_text($text);
$id = $notice->profile_id;
$r = preg_replace('/(^|\s+)@([A-Za-z0-9]{1,64})/e', "'\\1@'.common_at_link($id, '\\2')", $r);
$r = preg_replace('/^T ([A-Z0-9]{1,64}) /e', "'T '.common_at_link($id, '\\1').' '", $r);
$r = preg_replace('/(^|\s+)@#([A-Za-z0-9]{1,64})/e', "'\\1@#'.common_at_hash_link($id, '\\2')", $r);
return $r;
}
function common_render_text($text) {
$r = htmlspecialchars($text);
$r = preg_replace('/[\x{0}-\x{8}\x{b}-\x{c}\x{e}-\x{19}]/', '', $r);
$r = preg_replace_callback('@https?://[^\]>\s]+@', 'common_render_uri_thingy', $r);
$r = preg_replace('/(^|\s+)#([A-Za-z0-9_\-\.]{1,64})/e', "'\\1#'.common_tag_link('\\2')", $r);
# XXX: machine tags
return $r;
}
function common_render_uri_thingy($matches) {
$uri = $matches[0];
$trailer = '';
# Some heuristics for extracting URIs from surrounding punctuation
# Strip from trailing text...
if (preg_match('/^(.*)([,.:"\']+)$/', $uri, $matches)) {
$uri = $matches[1];
$trailer = $matches[2];
}
$pairs = array(
']' => '[', # technically disallowed in URIs, but used in Java docs
')' => '(', # far too frequent in Wikipedia and MSDN
);
$final = substr($uri, -1, 1);
if (isset($pairs[$final])) {
$openers = substr_count($uri, $pairs[$final]);
$closers = substr_count($uri, $final);
if ($closers > $openers) {
// Assume the paren was opened outside the URI
$uri = substr($uri, 0, -1);
$trailer = $final . $trailer;
}
}
if ($longurl = common_longurl($uri)) {
$longurl = htmlentities($longurl, ENT_QUOTES, 'UTF-8');
$title = " title='$longurl'";
}
else $title = '';
return '<a href="' . $uri . '"' . $title . ' class="extlink">' . $uri . '</a>' . $trailer;
}
function common_longurl($short_url) {
$long_url = common_shorten_link($short_url, true);
if ($long_url === $short_url) return false;
return $long_url;
}
function common_longurl2($uri) {
$uri_e = urlencode($uri);
$longurl = unserialize(file_get_contents("http://api.longurl.org/v1/expand?format=php&url=$uri_e"));
if (empty($longurl['long_url']) || $uri === $longurl['long_url']) return false;
return stripslashes($longurl['long_url']);
}
function common_shorten_links($text) {
if (mb_strlen($text) <= 140) return $text;
static $cache = array();
if (isset($cache[$text])) return $cache[$text];
// \s = not a horizontal whitespace character (since PHP 5.2.4)
return $cache[$text] = preg_replace('@https?://[^)\]>\s]+@e', "common_shorten_link('\\0')", $text);
}
function common_shorten_link($url, $reverse = false) {
static $url_cache = array();
if ($reverse) return isset($url_cache[$url]) ? $url_cache[$url] : $url;
$user = common_current_user();
$curlh = curl_init();
curl_setopt($curlh, CURLOPT_CONNECTTIMEOUT, 20); // # seconds to wait
curl_setopt($curlh, CURLOPT_USERAGENT, 'Laconica');
curl_setopt($curlh, CURLOPT_RETURNTRANSFER, true);
switch($user->urlshorteningservice) {
case 'ur1.ca':
$short_url_service = new LilUrl;
$short_url = $short_url_service->shorten($url);
break;
case '2tu.us':
$short_url_service = new TightUrl;
$short_url = $short_url_service->shorten($url);
break;
case 'ptiturl.com':
$short_url_service = new PtitUrl;
$short_url = $short_url_service->shorten($url);
break;
case 'bit.ly':
curl_setopt($curlh, CURLOPT_URL, 'http://bit.ly/api?method=shorten&long_url='.urlencode($url));
$short_url = current(json_decode(curl_exec($curlh))->results)->hashUrl;
break;
case 'is.gd':
curl_setopt($curlh, CURLOPT_URL, 'http://is.gd/api.php?longurl='.urlencode($url));
$short_url = curl_exec($curlh);
break;
case 'snipr.com':
curl_setopt($curlh, CURLOPT_URL, 'http://snipr.com/site/snip?r=simple&link='.urlencode($url));
$short_url = curl_exec($curlh);
break;
case 'metamark.net':
curl_setopt($curlh, CURLOPT_URL, 'http://metamark.net/api/rest/simple?long_url='.urlencode($url));
$short_url = curl_exec($curlh);
break;
case 'tinyurl.com':
curl_setopt($curlh, CURLOPT_URL, 'http://tinyurl.com/api-create.php?url='.urlencode($url));
$short_url = curl_exec($curlh);
break;
default:
$short_url = false;
}
curl_close($curlh);
if ($short_url) {
$url_cache[(string)$short_url] = $url;
return (string)$short_url;
}
return $url;
}
function common_xml_safe_str($str) {
$xmlStr = htmlentities(iconv('UTF-8', 'UTF-8//IGNORE', $str), ENT_NOQUOTES, 'UTF-8');
// Replace control, formatting, and surrogate characters with '*', ala Twitter
return preg_replace('/[\p{Cc}\p{Cf}\p{Cs}]/u', '*', $str);
}
function common_tag_link($tag) {
$canonical = common_canonical_tag($tag);
$url = common_local_url('tag', array('tag' => $canonical));
return '<a href="' . htmlspecialchars($url) . '" rel="tag" class="hashlink">' . htmlspecialchars($tag) . '</a>';
}
function common_canonical_tag($tag) {
return strtolower(str_replace(array('-', '_', '.'), '', $tag));
}
function common_valid_profile_tag($str) {
return preg_match('/^[A-Za-z0-9_\-\.]{1,64}$/', $str);
}
function common_at_link($sender_id, $nickname) {
$sender = Profile::staticGet($sender_id);
$recipient = common_relative_profile($sender, common_canonical_nickname($nickname));
if ($recipient) {
return '<a href="'.htmlspecialchars($recipient->profileurl).'" class="atlink">'.$nickname.'</a>';
} else {
return $nickname;
}
}
function common_at_hash_link($sender_id, $tag) {
$user = User::staticGet($sender_id);
if (!$user) {
return $tag;
}
$tagged = Profile_tag::getTagged($user->id, common_canonical_tag($tag));
if ($tagged) {
$url = common_local_url('subscriptions',
array('nickname' => $user->nickname,
'tag' => $tag));
return '<a href="'.htmlspecialchars($url).'" class="atlink">'.$tag.'</a>';
} else {
return $tag;
}
}
function common_relative_profile($sender, $nickname, $dt=NULL) {
# Try to find profiles this profile is subscribed to that have this nickname
$recipient = new Profile();
# XXX: use a join instead of a subquery
$recipient->whereAdd('EXISTS (SELECT subscribed from subscription where subscriber = '.$sender->id.' and subscribed = id)', 'AND');
$recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
if ($recipient->find(TRUE)) {
# XXX: should probably differentiate between profiles with
# the same name by date of most recent update
return $recipient;
}
# Try to find profiles that listen to this profile and that have this nickname
$recipient = new Profile();
# XXX: use a join instead of a subquery
$recipient->whereAdd('EXISTS (SELECT subscriber from subscription where subscribed = '.$sender->id.' and subscriber = id)', 'AND');
$recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
if ($recipient->find(TRUE)) {
# XXX: should probably differentiate between profiles with
# the same name by date of most recent update
return $recipient;
}
# If this is a local user, try to find a local user with that nickname.
$sender = User::staticGet($sender->id);
if ($sender) {
$recipient_user = User::staticGet('nickname', $nickname);
if ($recipient_user) {
return $recipient_user->getProfile();
}
}
# Otherwise, no links. @messages from local users to remote users,
# or from remote users to other remote users, are just
# outside our ability to make intelligent guesses about
return NULL;
}
// where should the avatar go for this user?
function common_avatar_filename($id, $extension, $size=NULL, $extra=NULL) {
global $config;
if ($size) {
return $id . '-' . $size . (($extra) ? ('-' . $extra) : '') . $extension;
} else {
return $id . '-original' . (($extra) ? ('-' . $extra) : '') . $extension;
}
}
function common_avatar_path($filename) {
global $config;
return INSTALLDIR . '/avatar/' . $filename;
}
function common_avatar_url($filename) {
return common_path('avatar/'.$filename);
}
function common_avatar_display_url($avatar) {
$server = common_config('avatar', 'server');
if ($server) {
return 'http://'.$server.'/'.$avatar->filename;
} else {
return $avatar->url;
}
}
function common_default_avatar($size) {
static $sizenames = array(AVATAR_PROFILE_SIZE => 'profile',
AVATAR_STREAM_SIZE => 'stream',
AVATAR_MINI_SIZE => 'mini');
return theme_path('default-avatar-'.$sizenames[$size].'.png');
}
function common_local_url($action, $args=NULL, $fragment=NULL) {
$url = NULL;
if (common_config('site','fancy')) {
$url = common_fancy_url($action, $args);
} else {
$url = common_simple_url($action, $args);
}
if (!is_null($fragment)) {
$url .= '#'.$fragment;
}
return $url;
}
function common_fancy_url($action, $args=NULL) {
switch (strtolower($action)) {
case 'public':
if ($args && isset($args['page'])) {
return common_path('?page=' . $args['page']);
} else {
return common_path('');
}
case 'featured':
if ($args && isset($args['page'])) {
return common_path('featured?page=' . $args['page']);
} else {
return common_path('featured');
}
case 'favorited':
if ($args && isset($args['page'])) {
return common_path('favorited?page=' . $args['page']);
} else {
return common_path('favorited');
}
case 'publicrss':
return common_path('rss');
case 'publicatom':
return common_path("api/statuses/public_timeline.atom");
case 'publicxrds':
return common_path('xrds');
case 'featuredrss':
return common_path('featuredrss');
case 'favoritedrss':
return common_path('favoritedrss');
case 'opensearch':
if ($args && $args['type']) {
return common_path('opensearch/'.$args['type']);
} else {
return common_path('opensearch/people');
}
case 'doc':
return common_path('doc/'.$args['title']);
case 'block':
case 'login':
case 'logout':
case 'subscribe':
case 'unsubscribe':
case 'invite':
return common_path('main/'.$action);
case 'tagother':
return common_path('main/tagother?id='.$args['id']);
case 'register':
if ($args && $args['code']) {
return common_path('main/register/'.$args['code']);
} else {
return common_path('main/register');
}
case 'remotesubscribe':
if ($args && $args['nickname']) {
return common_path('main/remote?nickname=' . $args['nickname']);
} else {
return common_path('main/remote');
}
case 'nudge':
return common_path($args['nickname'].'/nudge');
case 'openidlogin':
return common_path('main/openid');
case 'profilesettings':
return common_path('settings/profile');
case 'emailsettings':
return common_path('settings/email');
case 'openidsettings':
return common_path('settings/openid');
case 'smssettings':
return common_path('settings/sms');
case 'twittersettings':
return common_path('settings/twitter');
case 'othersettings':
return common_path('settings/other');
case 'deleteprofile':
return common_path('settings/delete');
case 'newnotice':
if ($args && $args['replyto']) {
return common_path('notice/new?replyto='.$args['replyto']);
} else {
return common_path('notice/new');
}
case 'shownotice':
return common_path('notice/'.$args['notice']);
case 'deletenotice':
if ($args && $args['notice']) {
return common_path('notice/delete/'.$args['notice']);
} else {
return common_path('notice/delete');
}
case 'microsummary':
case 'xrds':
case 'foaf':
return common_path($args['nickname'].'/'.$action);
case 'all':
case 'replies':
case 'inbox':
case 'outbox':
if ($args && isset($args['page'])) {
return common_path($args['nickname'].'/'.$action.'?page=' . $args['page']);
} else {
return common_path($args['nickname'].'/'.$action);
}
case 'subscriptions':
case 'subscribers':
$nickname = $args['nickname'];
unset($args['nickname']);
if (isset($args['tag'])) {
$tag = $args['tag'];
unset($args['tag']);
}
$params = http_build_query($args);
if ($params) {
return common_path($nickname.'/'.$action . (($tag) ? '/' . $tag : '') . '?' . $params);
} else {
return common_path($nickname.'/'.$action . (($tag) ? '/' . $tag : ''));
}
case 'allrss':
return common_path($args['nickname'].'/all/rss');
case 'repliesrss':
return common_path($args['nickname'].'/replies/rss');
case 'userrss':
if (isset($args['limit']))
return common_path($args['nickname'].'/rss?limit=' . $args['limit']);
return common_path($args['nickname'].'/rss');
case 'showstream':
if ($args && isset($args['page'])) {
return common_path($args['nickname'].'?page=' . $args['page']);
} else {
return common_path($args['nickname']);
}
case 'usertimeline':
return common_path("api/statuses/user_timeline/".$args['nickname'].".atom");
case 'confirmaddress':
return common_path('main/confirmaddress/'.$args['code']);
case 'userbyid':
return common_path('user/'.$args['id']);
case 'recoverpassword':
$path = 'main/recoverpassword';
if ($args['code']) {
$path .= '/' . $args['code'];
}
return common_path($path);
case 'imsettings':
return common_path('settings/im');
case 'peoplesearch':
return common_path('search/people' . (($args) ? ('?' . http_build_query($args)) : ''));
case 'noticesearch':
return common_path('search/notice' . (($args) ? ('?' . http_build_query($args)) : ''));
case 'noticesearchrss':
return common_path('search/notice/rss' . (($args) ? ('?' . http_build_query($args)) : ''));
case 'avatarbynickname':
return common_path($args['nickname'].'/avatar/'.$args['size']);
case 'tag':
if (isset($args['tag']) && $args['tag']) {
$path = 'tag/' . $args['tag'];
unset($args['tag']);
} else {
$path = 'tags';
}
return common_path($path . (($args) ? ('?' . http_build_query($args)) : ''));
case 'tagrss':
$path = 'tag/' . $args['tag'] . '/rss';
unset($args['tag']);
return common_path($path . (($args) ? ('?' . http_build_query($args)) : ''));
case 'peopletag':
$path = 'peopletag/' . $args['tag'];
unset($args['tag']);
return common_path($path . (($args) ? ('?' . http_build_query($args)) : ''));
case 'tags':
return common_path('tags' . (($args) ? ('?' . http_build_query($args)) : ''));
case 'favor':
return common_path('main/favor');
case 'disfavor':
return common_path('main/disfavor');
case 'showfavorites':
if ($args && isset($args['page'])) {
return common_path($args['nickname'].'/favorites?page=' . $args['page']);
} else {
return common_path($args['nickname'].'/favorites');
}
case 'favoritesrss':
return common_path($args['nickname'].'/favorites/rss');
case 'showmessage':
return common_path('message/' . $args['message']);
case 'newmessage':
return common_path('message/new' . (($args) ? ('?' . http_build_query($args)) : ''));
case 'api':
# XXX: do fancy URLs for all the API methods
switch (strtolower($args['apiaction'])) {
case 'statuses':
switch (strtolower($args['method'])) {
case 'user_timeline.rss':
return common_path('api/statuses/user_timeline/'.$args['argument'].'.rss');
case 'user_timeline.atom':
return common_path('api/statuses/user_timeline/'.$args['argument'].'.atom');
case 'user_timeline.json':
return common_path('api/statuses/user_timeline/'.$args['argument'].'.json');
case 'user_timeline.xml':
return common_path('api/statuses/user_timeline/'.$args['argument'].'.xml');
default: return common_simple_url($action, $args);
}
default: return common_simple_url($action, $args);
}
case 'sup':
if ($args && isset($args['seconds'])) {
return common_path('main/sup?seconds='.$args['seconds']);
} else {
return common_path('main/sup');
}
default:
return common_simple_url($action, $args);
}
}
function common_simple_url($action, $args=NULL) {
global $config;
/* XXX: pretty URLs */
$extra = '';
if ($args) {
foreach ($args as $key => $value) {
$extra .= "&${key}=${value}";
}
}
return common_path("index.php?action=${action}${extra}");
}
function common_path($relative) {
global $config;
$pathpart = ($config['site']['path']) ? $config['site']['path']."/" : '';
return "http://".$config['site']['server'].'/'.$pathpart.$relative;
}
function common_date_string($dt) {
// XXX: do some sexy date formatting
// return date(DATE_RFC822, $dt);
$t = strtotime($dt);
$now = time();
$diff = $now - $t;
if ($now < $t) { # that shouldn't happen!
return common_exact_date($dt);
} else if ($diff < 60) {
return _('a few seconds ago');
} else if ($diff < 92) {
return _('about a minute ago');
} else if ($diff < 3300) {
return sprintf(_('about %d minutes ago'), round($diff/60));
} else if ($diff < 5400) {
return _('about an hour ago');
} else if ($diff < 22 * 3600) {
return sprintf(_('about %d hours ago'), round($diff/3600));
} else if ($diff < 37 * 3600) {
return _('about a day ago');
} else if ($diff < 24 * 24 * 3600) {
return sprintf(_('about %d days ago'), round($diff/(24*3600)));
} else if ($diff < 46 * 24 * 3600) {
return _('about a month ago');
} else if ($diff < 330 * 24 * 3600) {
return sprintf(_('about %d months ago'), round($diff/(30*24*3600)));
} else if ($diff < 480 * 24 * 3600) {
return _('about a year ago');
} else {
return common_exact_date($dt);
}
}
function common_exact_date($dt) {
static $_utc;
static $_siteTz;
if (!$_utc) {
$_utc = new DateTimeZone('UTC');
$_siteTz = new DateTimeZone(common_timezone());
}
$dateStr = date('d F Y H:i:s', strtotime($dt));
$d = new DateTime($dateStr, $_utc);
$d->setTimezone($_siteTz);
return $d->format(DATE_RFC850);
}
function common_date_w3dtf($dt) {
$dateStr = date('d F Y H:i:s', strtotime($dt));
$d = new DateTime($dateStr, new DateTimeZone('UTC'));
$d->setTimezone(new DateTimeZone(common_timezone()));
return $d->format(DATE_W3C);
}
function common_date_rfc2822($dt) {
$dateStr = date('d F Y H:i:s', strtotime($dt));
$d = new DateTime($dateStr, new DateTimeZone('UTC'));
$d->setTimezone(new DateTimeZone(common_timezone()));
return $d->format('r');
}
function common_date_iso8601($dt) {
$dateStr = date('d F Y H:i:s', strtotime($dt));
$d = new DateTime($dateStr, new DateTimeZone('UTC'));
$d->setTimezone(new DateTimeZone(common_timezone()));
return $d->format('c');
}
function common_sql_now() {
return strftime('%Y-%m-%d %H:%M:%S', time());
}
function common_redirect($url, $code=307) {
static $status = array(301 => "Moved Permanently",
302 => "Found",
303 => "See Other",
307 => "Temporary Redirect");
header("Status: ${code} $status[$code]");
header("Location: $url");
common_start_xml('a',
'-//W3C//DTD XHTML 1.0 Strict//EN',
'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
common_element('a', array('href' => $url), $url);
common_end_xml();
exit;
}
function common_save_replies($notice) {
# Alternative reply format
$tname = false;
if (preg_match('/^T ([A-Z0-9]{1,64}) /', $notice->content, $match)) {
$tname = $match[1];
}
# extract all @messages
$cnt = preg_match_all('/(?:^|\s)@([a-z0-9]{1,64})/', $notice->content, $match);
$names = array();
if ($cnt || $tname) {
# XXX: is there another way to make an array copy?
$names = ($tname) ? array_unique(array_merge(array(strtolower($tname)), $match[1])) : array_unique($match[1]);
}
$sender = Profile::staticGet($notice->profile_id);
$replied = array();
# store replied only for first @ (what user/notice what the reply directed,
# we assume first @ is it)
for ($i=0; $i<count($names); $i++) {
$nickname = $names[$i];
$recipient = common_relative_profile($sender, $nickname, $notice->created);
if (!$recipient) {
continue;
}
if ($i == 0 && ($recipient->id != $sender->id) && !$notice->reply_to) { # Don't save reply to self
$reply_for = $recipient;
$recipient_notice = $reply_for->getCurrentNotice();
if ($recipient_notice) {
$orig = clone($notice);
$notice->reply_to = $recipient_notice->id;
$notice->update($orig);
}
}
# Don't save replies from blocked profile to local user
$recipient_user = User::staticGet('id', $recipient->id);
if ($recipient_user && $recipient_user->hasBlocked($sender)) {
continue;
}
$reply = new Reply();
$reply->notice_id = $notice->id;
$reply->profile_id = $recipient->id;
$id = $reply->insert();
if (!$id) {
$last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
common_log(LOG_ERR, 'DB error inserting reply: ' . $last_error->message);
common_server_error(sprintf(_('DB error inserting reply: %s'), $last_error->message));
return;
} else {
$replied[$recipient->id] = 1;
}
}
# Hash format replies, too
$cnt = preg_match_all('/(?:^|\s)@#([a-z0-9]{1,64})/', $notice->content, $match);
if ($cnt) {
foreach ($match[1] as $tag) {
$tagged = Profile_tag::getTagged($sender->id, $tag);
foreach ($tagged as $t) {
if (!$replied[$t->id]) {
# Don't save replies from blocked profile to local user
$t_user = User::staticGet('id', $t->id);
if ($t_user && $t_user->hasBlocked($sender)) {
continue;
}
$reply = new Reply();
$reply->notice_id = $notice->id;
$reply->profile_id = $t->id;
$id = $reply->insert();
if (!$id) {
common_log_db_error($reply, 'INSERT', __FILE__);
return;
}
}
}
}
}
}
function common_broadcast_notice($notice, $remote=false) {
// Check to see if notice should go to Twitter
$flink = Foreign_link::getByUserID($notice->profile_id, 1); // 1 == Twitter
if (($flink->noticesync & FOREIGN_NOTICE_SEND) == FOREIGN_NOTICE_SEND) {
// If it's not a Twitter-style reply, or if the user WANTS to send replies...
if (!preg_match('/^@[a-zA-Z0-9_]{1,15}\b/u', $notice->content) ||
(($flink->noticesync & FOREIGN_NOTICE_SEND_REPLY) == FOREIGN_NOTICE_SEND_REPLY)) {
$result = common_twitter_broadcast($notice, $flink);
if (!$result) {
common_debug('Unable to send notice: ' . $notice->id . ' to Twitter.', __FILE__);
}
}
}
if (common_config('queue', 'enabled')) {
# Do it later!
return common_enqueue_notice($notice);
} else {
return common_real_broadcast($notice, $remote);
}
}
function common_twitter_broadcast($notice, $flink) {
global $config;
$success = true;
$fuser = $flink->getForeignUser();
$twitter_user = $fuser->nickname;
$twitter_password = $flink->credentials;
$uri = 'http://www.twitter.com/statuses/update.json';
// XXX: Hack to get around PHP cURL's use of @ being a a meta character
$statustxt = preg_replace('/^@/', ' @', $notice->content);
$options = array(
CURLOPT_USERPWD => "$twitter_user:$twitter_password",
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => array(
'status' => $statustxt,
'source' => $config['integration']['source']
),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_FAILONERROR => true,
CURLOPT_HEADER => false,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_USERAGENT => "Laconica",
CURLOPT_CONNECTTIMEOUT => 120, // XXX: Scary!!!! How long should this be?
CURLOPT_TIMEOUT => 120,
# Twitter is strict about accepting invalid "Expect" headers
CURLOPT_HTTPHEADER => array('Expect:')
);
$ch = curl_init($uri);
curl_setopt_array($ch, $options);
$data = curl_exec($ch);
$errmsg = curl_error($ch);
if ($errmsg) {
common_debug("cURL error: $errmsg - trying to send notice for $twitter_user.",
__FILE__);
$success = false;
}
curl_close($ch);
if (!$data) {
common_debug("No data returned by Twitter's API trying to send update for $twitter_user",
__FILE__);
$success = false;
}
// Twitter should return a status
$status = json_decode($data);
if (!$status->id) {
common_debug("Unexpected data returned by Twitter API trying to send update for $twitter_user",
__FILE__);
$success = false;
}
return $success;
}
# Stick the notice on the queue
function common_enqueue_notice($notice) {
foreach (array('jabber', 'omb', 'sms', 'public') as $transport) {
$qi = new Queue_item();
$qi->notice_id = $notice->id;
$qi->transport = $transport;
$qi->created = $notice->created;
$result = $qi->insert();
if (!$result) {
$last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
common_log(LOG_ERR, 'DB error inserting queue item: ' . $last_error->message);
return false;
}
common_log(LOG_DEBUG, 'complete queueing notice ID = ' . $notice->id . ' for ' . $transport);
}
return $result;
}
function common_dequeue_notice($notice) {
$qi = Queue_item::staticGet($notice->id);
if ($qi) {
$result = $qi->delete();
if (!$result) {
$last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
common_log(LOG_ERR, 'DB error deleting queue item: ' . $last_error->message);
return false;
}
common_log(LOG_DEBUG, 'complete dequeueing notice ID = ' . $notice->id);
return $result;
} else {
return false;
}
}
function common_real_broadcast($notice, $remote=false) {
$success = true;
if (!$remote) {
# Make sure we have the OMB stuff
require_once(INSTALLDIR.'/lib/omb.php');
$success = omb_broadcast_remote_subscribers($notice);
if (!$success) {
common_log(LOG_ERR, 'Error in OMB broadcast for notice ' . $notice->id);
}
}
if ($success) {
require_once(INSTALLDIR.'/lib/jabber.php');
$success = jabber_broadcast_notice($notice);
if (!$success) {
common_log(LOG_ERR, 'Error in jabber broadcast for notice ' . $notice->id);
}
}
if ($success) {
require_once(INSTALLDIR.'/lib/mail.php');
$success = mail_broadcast_notice_sms($notice);
if (!$success) {
common_log(LOG_ERR, 'Error in sms broadcast for notice ' . $notice->id);
}
}
if ($success) {
$success = jabber_public_notice($notice);
if (!$success) {
common_log(LOG_ERR, 'Error in public broadcast for notice ' . $notice->id);
}
}
// XXX: broadcast notices to other IM
return $success;
}
function common_broadcast_profile($profile) {
// XXX: optionally use a queue system like http://code.google.com/p/microapps/wiki/NQDQ
require_once(INSTALLDIR.'/lib/omb.php');
omb_broadcast_profile($profile);
// XXX: Other broadcasts...?
return true;
}
function common_profile_url($nickname) {
return common_local_url('showstream', array('nickname' => $nickname));
}
# Don't call if nobody's logged in
function common_notice_form($action=NULL, $content=NULL) {
$user = common_current_user();
assert(!is_null($user));
common_element_start('form', array('id' => 'status_form',
'method' => 'post',
'action' => common_local_url('newnotice')));
common_element_start('p');
common_element('label', array('for' => 'status_textarea',
'id' => 'status_label'),
sprintf(_('What\'s up, %s?'), $user->nickname));
common_element('span', array('id' => 'counter', 'class' => 'counter'), '140');
common_element('textarea', array('id' => 'status_textarea',
'cols' => 60,
'rows' => 3,
'name' => 'status_textarea'),
($content) ? $content : '');
common_hidden('token', common_session_token());
if ($action) {
common_hidden('returnto', $action);
}
# set by JavaScript
common_hidden('inreplyto', 'false');
common_element('input', array('id' => 'status_submit',
'name' => 'status_submit',
'type' => 'submit',
'value' => _('Send')));
common_element_end('p');
common_element_end('form');
}
# Should make up a reasonable root URL
function common_root_url() {
return common_path('');
}
# returns $bytes bytes of random data as a hexadecimal string
# "good" here is a goal and not a guarantee
function common_good_rand($bytes) {
# XXX: use random.org...?
if (file_exists('/dev/urandom')) {
return common_urandom($bytes);
} else { # FIXME: this is probably not good enough
return common_mtrand($bytes);
}
}
function common_urandom($bytes) {
$h = fopen('/dev/urandom', 'rb');
# should not block
$src = fread($h, $bytes);
fclose($h);
$enc = '';
for ($i = 0; $i < $bytes; $i++) {
$enc .= sprintf("%02x", (ord($src[$i])));
}
return $enc;
}
function common_mtrand($bytes) {
$enc = '';
for ($i = 0; $i < $bytes; $i++) {
$enc .= sprintf("%02x", mt_rand(0, 255));
}
return $enc;
}
function common_set_returnto($url) {
common_ensure_session();
$_SESSION['returnto'] = $url;
}
function common_get_returnto() {
common_ensure_session();
return $_SESSION['returnto'];
}
function common_timestamp() {
return date('YmdHis');
}
function common_ensure_syslog() {
static $initialized = false;
if (!$initialized) {
global $config;
openlog($config['syslog']['appname'], 0, LOG_USER);
$initialized = true;
}
}
function common_log($priority, $msg, $filename=NULL) {
$logfile = common_config('site', 'logfile');
if ($logfile) {
$log = fopen($logfile, "a");
if ($log) {
static $syslog_priorities = array('LOG_EMERG', 'LOG_ALERT', 'LOG_CRIT', 'LOG_ERR',
'LOG_WARNING', 'LOG_NOTICE', 'LOG_INFO', 'LOG_DEBUG');
$output = date('Y-m-d H:i:s') . ' ' . $syslog_priorities[$priority] . ': ' . $msg . "\n";
fwrite($log, $output);
fclose($log);
}
} else {
common_ensure_syslog();
syslog($priority, $msg);
}
}
function common_debug($msg, $filename=NULL) {
if ($filename) {
common_log(LOG_DEBUG, basename($filename).' - '.$msg);
} else {
common_log(LOG_DEBUG, $msg);
}
}
function common_log_db_error(&$object, $verb, $filename=NULL) {
$objstr = common_log_objstring($object);
$last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
common_log(LOG_ERR, $last_error->message . '(' . $verb . ' on ' . $objstr . ')', $filename);
}
function common_log_objstring(&$object) {
if (is_null($object)) {
return "NULL";
}
$arr = $object->toArray();
$fields = array();
foreach ($arr as $k => $v) {
$fields[] = "$k='$v'";
}
$objstring = $object->tableName() . '[' . implode(',', $fields) . ']';
return $objstring;
}
function common_valid_http_url($url) {
return Validate::uri($url, array('allowed_schemes' => array('http', 'https')));
}
function common_valid_tag($tag) {
if (preg_match('/^tag:(.*?),(\d{4}(-\d{2}(-\d{2})?)?):(.*)$/', $tag, $matches)) {
return (Validate::email($matches[1]) ||
preg_match('/^([\w-\.]+)$/', $matches[1]));
}
return false;
}
# Does a little before-after block for next/prev page
function common_pagination($have_before, $have_after, $page, $action, $args=NULL) {
if ($have_before || $have_after) {
common_element_start('div', array('id' => 'pagination'));
common_element_start('ul', array('id' => 'nav_pagination'));
}
if ($have_before) {
$pargs = array('page' => $page-1);
$newargs = ($args) ? array_merge($args,$pargs) : $pargs;
common_element_start('li', 'before');
common_element('a', array('href' => common_local_url($action, $newargs), 'rel' => 'prev'),
_('« After'));
common_element_end('li');
}
if ($have_after) {
$pargs = array('page' => $page+1);
$newargs = ($args) ? array_merge($args,$pargs) : $pargs;
common_element_start('li', 'after');
common_element('a', array('href' => common_local_url($action, $newargs), 'rel' => 'next'),
_('Before »'));
common_element_end('li');
}
if ($have_before || $have_after) {
common_element_end('ul');
common_element_end('div');
}
}
/* Following functions are copied from MediaWiki GlobalFunctions.php
* and written by Evan Prodromou. */
function common_accept_to_prefs($accept, $def = '*/*') {
# No arg means accept anything (per HTTP spec)
if(!$accept) {
return array($def => 1);
}
$prefs = array();
$parts = explode(',', $accept);
foreach($parts as $part) {
# FIXME: doesn't deal with params like 'text/html; level=1'
@list($value, $qpart) = explode(';', $part);
$match = array();
if(!isset($qpart)) {
$prefs[$value] = 1;
} elseif(preg_match('/q\s*=\s*(\d*\.\d+)/', $qpart, $match)) {
$prefs[$value] = $match[1];
}
}
return $prefs;
}
function common_mime_type_match($type, $avail) {
if(array_key_exists($type, $avail)) {
return $type;
} else {
$parts = explode('/', $type);
if(array_key_exists($parts[0] . '/*', $avail)) {
return $parts[0] . '/*';
} elseif(array_key_exists('*/*', $avail)) {
return '*/*';
} else {
return NULL;
}
}
}
function common_negotiate_type($cprefs, $sprefs) {
$combine = array();
foreach(array_keys($sprefs) as $type) {
$parts = explode('/', $type);
if($parts[1] != '*') {
$ckey = common_mime_type_match($type, $cprefs);
if($ckey) {
$combine[$type] = $sprefs[$type] * $cprefs[$ckey];
}
}
}
foreach(array_keys($cprefs) as $type) {
$parts = explode('/', $type);
if($parts[1] != '*' && !array_key_exists($type, $sprefs)) {
$skey = common_mime_type_match($type, $sprefs);
if($skey) {
$combine[$type] = $sprefs[$skey] * $cprefs[$type];
}
}
}
$bestq = 0;
$besttype = "text/html";
foreach(array_keys($combine) as $type) {
if($combine[$type] > $bestq) {
$besttype = $type;
$bestq = $combine[$type];
}
}
return $besttype;
}
function common_config($main, $sub) {
global $config;
return isset($config[$main][$sub]) ? $config[$main][$sub] : false;
}
function common_copy_args($from) {
$to = array();
$strip = get_magic_quotes_gpc();
foreach ($from as $k => $v) {
$to[$k] = ($strip) ? stripslashes($v) : $v;
}
return $to;
}
// Neutralise the evil effects of magic_quotes_gpc in the current request.
// This is used before handing a request off to OAuthRequest::from_request.
function common_remove_magic_from_request() {
if(get_magic_quotes_gpc()) {
$_POST=array_map('stripslashes',$_POST);
$_GET=array_map('stripslashes',$_GET);
}
}
function common_user_uri(&$user) {
return common_local_url('userbyid', array('id' => $user->id));
}
function common_notice_uri(&$notice) {
return common_local_url('shownotice',
array('notice' => $notice->id));
}
# 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
function common_confirmation_code($bits) {
# 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
static $codechars = '23456789ABCDEFGHJKLMNPQRSTUVWXYZ';
$chars = ceil($bits/5);
$code = '';
for ($i = 0; $i < $chars; $i++) {
# XXX: convert to string and back
$num = hexdec(common_good_rand(1));
# XXX: randomness is too precious to throw away almost
# 40% of the bits we get!
$code .= $codechars[$num%32];
}
return $code;
}
# convert markup to HTML
function common_markup_to_html($c) {
$c = preg_replace('/%%action.(\w+)%%/e', "common_local_url('\\1')", $c);
$c = preg_replace('/%%doc.(\w+)%%/e', "common_local_url('doc', array('title'=>'\\1'))", $c);
$c = preg_replace('/%%(\w+).(\w+)%%/e', 'common_config(\'\\1\', \'\\2\')', $c);
return Markdown($c);
}
function common_profile_avatar_url($profile, $size=AVATAR_PROFILE_SIZE) {
$avatar = $profile->getAvatar($size);
if ($avatar) {
return common_avatar_display_url($avatar);
} else {
return common_default_avatar($size);
}
}
function common_profile_uri($profile) {
if (!$profile) {
return NULL;
}
$user = User::staticGet($profile->id);
if ($user) {
return $user->uri;
}
$remote = Remote_profile::staticGet($profile->id);
if ($remote) {
return $remote->uri;
}
# XXX: this is a very bad profile!
return NULL;
}
function common_canonical_sms($sms) {
# strip non-digits
preg_replace('/\D/', '', $sms);
return $sms;
}
function common_error_handler($errno, $errstr, $errfile, $errline, $errcontext) {
switch ($errno) {
case E_USER_ERROR:
common_log(LOG_ERR, "[$errno] $errstr ($errfile:$errline)");
exit(1);
break;
case E_USER_WARNING:
common_log(LOG_WARNING, "[$errno] $errstr ($errfile:$errline)");
break;
case E_USER_NOTICE:
common_log(LOG_NOTICE, "[$errno] $errstr ($errfile:$errline)");
break;
}
# FIXME: show error page if we're on the Web
/* Don't execute PHP internal error handler */
return true;
}
function common_session_token() {
common_ensure_session();
if (!array_key_exists('token', $_SESSION)) {
$_SESSION['token'] = common_good_rand(64);
}
return $_SESSION['token'];
}
function common_disfavor_form($notice) {
common_element_start('form', array('id' => 'disfavor-' . $notice->id,
'method' => 'post',
'class' => 'disfavor',
'action' => common_local_url('disfavor')));
common_element('input', array('type' => 'hidden',
'name' => 'token-'. $notice->id,
'id' => 'token-'. $notice->id,
'class' => 'token',
'value' => common_session_token()));
common_element('input', array('type' => 'hidden',
'name' => 'notice',
'id' => 'notice-n'. $notice->id,
'class' => 'notice',
'value' => $notice->id));
common_element('input', array('type' => 'submit',
'id' => 'disfavor-submit-' . $notice->id,
'name' => 'disfavor-submit-' . $notice->id,
'class' => 'disfavor',
'value' => 'Disfavor favorite',
'title' => 'Remove this message from favorites'));
common_element_end('form');
}
function common_favor_form($notice) {
common_element_start('form', array('id' => 'favor-' . $notice->id,
'method' => 'post',
'class' => 'favor',
'action' => common_local_url('favor')));
common_element('input', array('type' => 'hidden',
'name' => 'token-'. $notice->id,
'id' => 'token-'. $notice->id,
'class' => 'token',
'value' => common_session_token()));
common_element('input', array('type' => 'hidden',
'name' => 'notice',
'id' => 'notice-n'. $notice->id,
'class' => 'notice',
'value' => $notice->id));
common_element('input', array('type' => 'submit',
'id' => 'favor-submit-' . $notice->id,
'name' => 'favor-submit-' . $notice->id,
'class' => 'favor',
'value' => 'Add to favorites',
'title' => 'Add this message to favorites'));
common_element_end('form');
}
function common_nudge_form($profile) {
common_element_start('form', array('id' => 'nudge', 'method' => 'post',
'action' => common_local_url('nudge', array('nickname' => $profile->nickname))));
common_hidden('token', common_session_token());
common_element('input', array('type' => 'submit',
'class' => 'submit',
'value' => _('Send a nudge')));
common_element_end('form');
}
function common_nudge_response() {
common_element('p', array('id' => 'nudge_response'), _('Nudge sent!'));
}
function common_subscribe_form($profile) {
common_element_start('form', array('id' => 'subscribe-' . $profile->id,
'method' => 'post',
'class' => 'subscribe',
'action' => common_local_url('subscribe')));
common_hidden('token', common_session_token());
common_element('input', array('id' => 'subscribeto-' . $profile->id,
'name' => 'subscribeto',
'type' => 'hidden',
'value' => $profile->id));
common_element('input', array('type' => 'submit',
'class' => 'submit',
'value' => _('Subscribe')));
common_element_end('form');
}
function common_unsubscribe_form($profile) {
common_element_start('form', array('id' => 'unsubscribe-' . $profile->id,
'method' => 'post',
'class' => 'unsubscribe',
'action' => common_local_url('unsubscribe')));
common_hidden('token', common_session_token());
common_element('input', array('id' => 'unsubscribeto-' . $profile->id,
'name' => 'unsubscribeto',
'type' => 'hidden',
'value' => $profile->id));
common_element('input', array('type' => 'submit',
'class' => 'submit',
'value' => _('Unsubscribe')));
common_element_end('form');
}
// XXX: Refactor this code
function common_profile_new_message_nudge ($cur, $profile) {
$user = User::staticGet('id', $profile->id);
if ($cur && $cur->id != $user->id && $cur->mutuallySubscribed($user)) {
common_element_start('li', array('id' => 'profile_send_a_new_message'));
common_element('a', array('href' => common_local_url('newmessage', array('to' => $user->id))),
_('Send a message'));
common_element_end('li');
if ($user->email && $user->emailnotifynudge) {
common_element_start('li', array('id' => 'profile_nudge'));
common_nudge_form($user);
common_element_end('li');
}
}
}
function common_cache_key($extra) {
return 'laconica:' . common_keyize(common_config('site', 'name')) . ':' . $extra;
}
function common_keyize($str) {
$str = strtolower($str);
$str = preg_replace('/\s/', '_', $str);
return $str;
}
function common_message_form($content, $user, $to) {
common_element_start('form', array('id' => 'message_form',
'method' => 'post',
'action' => common_local_url('newmessage')));
$mutual_users = $user->mutuallySubscribedUsers();
$mutual = array();
while ($mutual_users->fetch()) {
if ($mutual_users->id != $user->id) {
$mutual[$mutual_users->id] = $mutual_users->nickname;
}
}
$mutual_users->free();
unset($mutual_users);
common_dropdown('to', _('To'), $mutual, NULL, FALSE, $to->id);
common_element_start('p');
common_element('textarea', array('id' => 'message_content',
'cols' => 60,
'rows' => 3,
'name' => 'content'),
($content) ? $content : '');
common_element('input', array('id' => 'message_send',
'name' => 'message_send',
'type' => 'submit',
'value' => _('Send')));
common_hidden('token', common_session_token());
common_element_end('p');
common_element_end('form');
}
function common_memcache() {
static $cache = NULL;
if (!common_config('memcached', 'enabled')) {
return NULL;
} else {
if (!$cache) {
$cache = new Memcache();
$servers = common_config('memcached', 'server');
if (is_array($servers)) {
foreach($servers as $server) {
$cache->addServer($server);
}
} else {
$cache->addServer($servers);
}
}
return $cache;
}
}
function common_compatible_license($from, $to) {
# XXX: better compatibility check needed here!
return ($from == $to);
}
/* These are almost identical, so we use a helper function */
function common_block_form($profile, $args=NULL) {
common_blocking_form('block', _('Block'), $profile, $args);
}
function common_unblock_form($profile, $args=NULL) {
common_blocking_form('unblock', _('Unblock'), $profile, $args);
}
function common_blocking_form($type, $label, $profile, $args=NULL) {
common_element_start('form', array('id' => $type . '-' . $profile->id,
'method' => 'post',
'class' => $type,
'action' => common_local_url($type)));
common_hidden('token', common_session_token());
common_element('input', array('id' => $type . 'to-' . $profile->id,
'name' => $type . 'to',
'type' => 'hidden',
'value' => $profile->id));
common_element('input', array('type' => 'submit',
'class' => 'submit',
'name' => $type,
'value' => $label));
if ($args) {
foreach ($args as $k => $v) {
common_hidden('returnto-' . $k, $v);
}
}
common_element_end('form');
return;
}
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